Auto merge of #10620 - autrilla:mach-command-improvements, r=Wafflespeanut
Auto merge of #10620 - autrilla:mach-command-improvements, r=Wafflespeanut

Improved readability of ensure_bootstrapped

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paulrouget/servo,larsbergstrom/servo,rnestler/servo,dsandeephegde/servo,ConnorGBrewster/servo,szeged/servo,jimberlage/servo,notriddle/servo,saneyuki/servo,mbrubeck/servo,anthgur/servo,emilio/servo,paulrouget/servo,pyfisch/servo,canaltinova/servo,pyfisch/servo,fiji-flo/servo,DominoTree/servo,emilio/servo,paulrouget/servo,KiChjang/servo,eddyb/servo,cbrewster/servo,KiChjang/servo,dati91/servo,mattnenterprise/servo,emilio/servo,splav/servo,mattnenterprise/servo,canaltinova/servo,pyfisch/servo,cbrewster/servo,szeged/servo,DominoTree/servo,peterjoel/servo,cbrewster/servo,emilio/servo,nrc/servo,DominoTree/servo,nrc/servo,DominoTree/servo,sadmansk/servo,cbrewster/servo,thiagopnts/servo,pyfisch/servo,mattnenterprise/servo,nrc/servo,dsandeephegde/servo,paulrouget/servo,saneyuki/servo,thiagopnts/servo,nrc/servo,anthgur/servo,nrc/servo,thiagopnts/servo,fiji-flo/servo,notriddle/servo,mbrubeck/servo,sadmansk/servo,upsuper/servo,emilio/servo,saneyuki/servo,dati91/servo,eddyb/servo,avadacatavra/servo,larsbergstrom/servo,splav/servo,ConnorGBrewster/servo,nnethercote/servo,pyfisch/servo,upsuper/servo,peterjoel/servo,mbrubeck/servo,KiChjang/servo,CJ8664/servo,DominoTree/servo,avadacatavra/servo,saneyuki/servo,eddyb/servo,nnethercote/servo,notriddle/servo,larsbergstrom/servo,KiChjang/servo,eddyb/servo,splav/servo,DominoTree/servo,DominoTree/servo,dati91/servo,splav/servo,dsandeephegde/servo,rnestler/servo,KiChjang/servo,saneyuki/servo,canaltinova/servo,larsbergstrom/servo,szeged/servo,emilio/servo,splav/servo,saneyuki/servo,mattnenterprise/servo,eddyb/servo,thiagopnts/servo,nnethercote/servo,ConnorGBrewster/servo,emilio/servo,thiagopnts/servo,szeged/servo,KiChjang/servo,peterjoel/servo,ConnorGBrewster/servo,KiChjang/servo,notriddle/servo,nnethercote/servo,szeged/servo,nnethercote/servo,mbrubeck/servo,DominoTree/servo,CJ8664/servo,larsbergstrom/servo,emilio/servo,eddyb/servo,notriddle/servo,pyfisch/servo,SimonSapin/servo,SimonSapin/servo,canaltinova/servo,DominoTree/servo,mbrubeck/servo,thiagopnts/servo,pyfisch/servo,pyfisch/servo,peterjoel/servo,dati91/servo,fiji-flo/servo,jimberlage/servo,splav/servo,mattnenterprise/servo,paulrouget/servo,sadmansk/servo,notriddle/servo,CJ8664/servo,saneyuki/servo,cbrewster/servo,nnethercote/servo,dsandeephegde/servo,CJ8664/servo,paulrouget/servo,nnethercote/servo,szeged/servo,mbrubeck/servo,saneyuki/servo,upsuper/servo,ConnorGBrewster/servo,fiji-flo/servo,fiji-flo/servo,fiji-flo/servo,jimberlage/servo,anthgur/servo,jimberlage/servo,nnethercote/servo,szeged/servo,CJ8664/servo,emilio/servo,dati91/servo,peterjoel/servo,dati91/servo,larsbergstrom/servo,nnethercote/servo,upsuper/servo,jimberlage/servo,paulrouget/servo,jimberlage/servo,ConnorGBrewster/servo,SimonSapin/servo,SimonSapin/servo,avadacatavra/servo,paulrouget/servo,sadmansk/servo,rnestler/servo,nrc/servo,KiChjang/servo,anthgur/servo,szeged/servo,eddyb/servo,canaltinova/servo,CJ8664/servo,peterjoel/servo,rnestler/servo,SimonSapin/servo,splav/servo,sadmansk/servo,KiChjang/servo,avadacatavra/servo,cbrewster/servo,notriddle/servo,larsbergstrom/servo,avadacatavra/servo,paulrouget/servo,KiChjang/servo,peterjoel/servo,dati91/servo,saneyuki/servo,SimonSapin/servo,nnethercote/servo,larsbergstrom/servo,dsandeephegde/servo,upsuper/servo,mbrubeck/servo,sadmansk/servo,paulrouget/servo,pyfisch/servo,splav/servo,rnestler/servo,fiji-flo/servo,SimonSapin/servo,cbrewster/servo,mattnenterprise/servo,sadmansk/servo,notriddle/servo,mattnenterprise/servo,saneyuki/servo,CJ8664/servo,canaltinova/servo,peterjoel/servo,notriddle/servo,mbrubeck/servo,canaltinova/servo,CJ8664/servo,eddyb/servo,szeged/servo,peterjoel/servo,jimberlage/servo,anthgur/servo,ConnorGBrewster/servo,peterjoel/servo,anthgur/servo,mattnenterprise/servo,anthgur/servo,emilio/servo,rnestler/servo,upsuper/servo,dsandeephegde/servo,notriddle/servo,sadmansk/servo,thiagopnts/servo,thiagopnts/servo,rnestler/servo,canaltinova/servo,DominoTree/servo,SimonSapin/servo,fiji-flo/servo,larsbergstrom/servo,ConnorGBrewster/servo,anthgur/servo,jimberlage/servo,pyfisch/servo,upsuper/servo,nrc/servo,splav/servo,szeged/servo,dsandeephegde/servo,jimberlage/servo,dati91/servo,splav/servo,rnestler/servo,avadacatavra/servo,avadacatavra/servo,avadacatavra/servo,cbrewster/servo,larsbergstrom/servo,dsandeephegde/servo,upsuper/servo